github.com/lrita/numa@v1.0.2/numa_linux_amd64.go (about) 1 package numa 2 3 import ( 4 "github.com/intel-go/cpuid" 5 ) 6 7 var fastway = cpuid.HasFeature(cpuid.RDTSCP) 8 9 func getcpu() 10 11 // GetCPUAndNode returns the node id and cpu id which current caller running on. 12 // https://man7.org/linux/man-pages/man2/getcpu.2.html 13 // 14 // equal: 15 // 16 // if fastway { 17 // call RDTSCP 18 // The linux kernel will fill the node cpu id in the private data of each cpu. 19 // arch/x86/kernel/vsyscall_64.c@vsyscall_set_cpu 20 // } 21 // call vdsoGetCPU 22 func GetCPUAndNode() (cpu int, node int)